"It is ironic that in NSW we have not been prepared to give women that same protection."

The Labor caucus has endorsed the bill, but the coalition's position is not yet known.

The bill also has the support of the Australian Medical Association NSW.

"In the case of pregnancy termination, women do not seek these procedures out lightly and the absolute last thing anyone in those circumstances needs is abuse from strangers," President Kean-Seng Lim said in a statement.

The legislation aims to "ensure people are able to enter and leave reproductive health clinics at which abortions are provided without interference, and in a manner that protects their safety and well-being, and respects their privacy and dignity".

Any conduct occurring in a church or other religious buildings is exempt, as are protesters congregating outside parliament house on Macquarie Street, even if within 150 metres of a clinic.

The Australian Christian Lobby says the proposal will prevent "communication of support" to women considering an abortion.

"If communication is banned within zones around abortion clinics many women will never receive genuine support," ACL NSW director Kieren Jackson said in a statement.

Tasmania, Victoria, the ACT and the Northern Territory already have safe access zones around abortion providers, but the laws in Victoria and Tasmania are being challenged on the basis they interfere with the implied freedom of political communication.